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Open AccessArticle

Mechanical Properties of FDM Printed PLA Parts before and after Thermal Treatment

1
Faculty of Engineering and Mathematics, Bielefeld University of Applied Sciences, 33619 Bielefeld, Germany
2
Mechanical Department, Ecole Nationale d’Ingénieurs de Sfax (ENIS), Sfax 3038, Tunisia
*
Author to whom correspondence should be addressed.
Academic Editors: Antonio Pizzi and Frank Wiesbrock
Polymers 2021, 13(8), 1239; https://doi.org/10.3390/polym13081239
Received: 7 March 2021 / Revised: 2 April 2021 / Accepted: 9 April 2021 / Published: 11 April 2021
(This article belongs to the Special Issue Feature Papers of Green and Sustainable Chemistry in Polymer Science)
Fused deposition modeling (FDM) is one of the most often-used technologies in additive manufacturing. Several materials are used with this technology, such as poly(lactic acid) (PLA), which is most commonly applied. The mechanical properties of 3D-printed parts depend on the process parameters. This is why, in this study, three-point bending tests were carried out to characterize the influence of build orientation, layer thickness, printing temperature and printing speed on the mechanical properties of PLA samples. Not only the process parameters may affect the mechanical properties, but heat after-treatment also has an influence on them. For this reason, additional samples were printed with optimal process parameters and characterized after pure heat treatment as well as after deformation at a temperature above the glass transition temperature, cooling with applied deformation, and subsequent recovery under heat treatment. These findings are planned to be used in a future study on finger orthoses that could either be printed according to shape or in a flat shape and afterwards heated and bent around the finger. View Full-Text
Keywords: polylactic acid; heat treatment; mechanical properties; printing parameters; finger orthosis polylactic acid; heat treatment; mechanical properties; printing parameters; finger orthosis
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MDPI and ACS Style

Chalgham, A.; Ehrmann, A.; Wickenkamp, I. Mechanical Properties of FDM Printed PLA Parts before and after Thermal Treatment. Polymers 2021, 13, 1239. https://doi.org/10.3390/polym13081239

AMA Style

Chalgham A, Ehrmann A, Wickenkamp I. Mechanical Properties of FDM Printed PLA Parts before and after Thermal Treatment. Polymers. 2021; 13(8):1239. https://doi.org/10.3390/polym13081239

Chicago/Turabian Style

Chalgham, Ali; Ehrmann, Andrea; Wickenkamp, Inge. 2021. "Mechanical Properties of FDM Printed PLA Parts before and after Thermal Treatment" Polymers 13, no. 8: 1239. https://doi.org/10.3390/polym13081239

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